X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Futils%2FPanic.lhs;h=b8ab86af6813bcf597b308f81471cb53e07e8d94;hb=e761a777f2440ca1b8d8b40848cc5aa30d889ff6;hp=1a74d5db3257326630e9dea57f1ee900a9f349e8;hpb=0065d5ab628975892cea1ec7303f968c3338cbe1;p=ghc-hetmet.git

diff --git a/compiler/utils/Panic.lhs b/compiler/utils/Panic.lhs
index 1a74d5d..b8ab86a 100644
--- a/compiler/utils/Panic.lhs
+++ b/compiler/utils/Panic.lhs
@@ -1,7 +1,7 @@
 %
+% (c) The University of Glasgow 2006
 % (c) The GRASP Project, Glasgow University, 1992-2000
 %
-\section{Panic error messages}
 
 Defines basic funtions for printing error messages.
 
@@ -14,7 +14,7 @@ module Panic
      GhcException(..), showGhcException, ghcError, progName, 
      pgmError,
 
-     panic, panic#, assertPanic, trace,
+     panic, panicFastInt, assertPanic, trace,
      
      Exception.Exception(..), showException, try, tryJust, tryMost, tryUser,
      catchJust, ioErrors, throwTo,
@@ -28,35 +28,22 @@ import Config
 import FastTypes
 
 #ifndef mingw32_HOST_OS
-# if __GLASGOW_HASKELL__ > 504
 import System.Posix.Signals
-# else
-import Posix		( Handler(Catch), installHandler, sigINT, sigQUIT )
-# endif /* GHC > 504 */
 #endif /* mingw32_HOST_OS */
 
-#if defined(mingw32_HOST_OS) && __GLASGOW_HASKELL__ >= 603
+#if defined(mingw32_HOST_OS)
 import GHC.ConsoleHandler
 #endif
 
-# if __GLASGOW_HASKELL__ < 500
-import EXCEPTION        ( raiseInThread )
-# else
-import EXCEPTION	( throwTo )
-# endif /* GHC < 500 */
-
-#if __GLASGOW_HASKELL__ > 408
-import EXCEPTION	( catchJust, tryJust, ioErrors )
-#endif
-
-import CONCURRENT	( myThreadId, MVar, ThreadId, withMVar, newEmptyMVar )
-import DYNAMIC
-import qualified EXCEPTION as Exception
-import TRACE		( trace )
-import UNSAFE_IO	( unsafePerformIO )
-import IO		( isUserError )
-
-import System
+import Control.Exception
+import Control.Concurrent ( MVar, ThreadId, withMVar, newMVar )
+import Data.Dynamic
+import qualified Control.Exception as Exception
+import Debug.Trace	( trace )
+import System.IO.Unsafe	( unsafePerformIO )
+import System.IO.Error	( isUserError )
+import System.Exit
+import System.Environment
 \end{code}
 
 GHC's own exception type.
@@ -85,9 +72,11 @@ data GhcException
   | ProgramError String		-- error in the user's code, probably
   deriving Eq
 
+progName :: String
 progName = unsafePerformIO (getProgName)
 {-# NOINLINE progName #-}
 
+short_usage :: String
 short_usage = "Usage: For basic information, try the `--help' option."
    
 showException :: Exception.Exception -> String
@@ -98,8 +87,10 @@ showException other_exn	       	 	 = show other_exn
 
 instance Show GhcException where
   showsPrec _ e@(ProgramError _) = showGhcException e
+  showsPrec _ e@(CmdLineError _) = showString "<command line>: " . showGhcException e
   showsPrec _ e = showString progName . showString ": " . showGhcException e
 
+showGhcException :: GhcException -> String -> String
 showGhcException (UsageError str)
    = showString str . showChar '\n' . showString short_usage
 showGhcException (PhaseFailed phase code)
@@ -125,16 +116,11 @@ showGhcException (Panic s)
 	         ++ s ++ "\n\n"
 	         ++ "Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug\n")
 
-#if __GLASGOW_HASKELL__ < 603
-myMkTyConApp = mkAppTy
-#else 
-myMkTyConApp = mkTyConApp
-#endif
-
+ghcExceptionTc :: TyCon
 ghcExceptionTc = mkTyCon "GhcException"
 {-# NOINLINE ghcExceptionTc #-}
 instance Typeable GhcException where
-  typeOf _ = myMkTyConApp ghcExceptionTc []
+  typeOf _ = mkTyConApp ghcExceptionTc []
 \end{code}
 
 Panics and asserts.
@@ -148,8 +134,8 @@ pgmError x = Exception.throwDyn (ProgramError x)
 -- what TAG_ is with GHC at the moment.  Ugh. (Simon)
 -- No, man -- Too Beautiful! (Will)
 
-panic# :: String -> FastInt
-panic# s = case (panic s) of () -> _ILIT 0
+panicFastInt :: String -> FastInt
+panicFastInt s = case (panic s) of () -> _ILIT(0)
 
 assertPanic :: String -> Int -> a
 assertPanic file line = 
@@ -180,33 +166,10 @@ tryMost action = do r <- try action; filter r
 tryUser :: IO a -> IO (Either Exception.Exception a)
 tryUser action = tryJust tc_errors action
   where 
-#if __GLASGOW_HASKELL__ > 504 || __GLASGOW_HASKELL__ < 500
 	tc_errors e@(Exception.IOException ioe) | isUserError ioe = Just e
-#elif __GLASGOW_HASKELL__ == 502
-	tc_errors e@(UserError _) = Just e
-#else 
-	tc_errors e@(Exception.IOException ioe) | isUserError e = Just e
-#endif
 	tc_errors _other = Nothing
 \end{code}	
 
-Compatibility stuff:
-
-\begin{code}
-#if __GLASGOW_HASKELL__ <= 408
-try = Exception.tryAllIO
-#else
-try = Exception.try
-#endif
-
-#if __GLASGOW_HASKELL__ <= 408
-catchJust = Exception.catchIO
-tryJust   = Exception.tryIO
-ioErrors  = Exception.justIoErrors
-throwTo   = Exception.raiseInThread
-#endif
-\end{code}
-
 Standard signal handlers for catching ^C, which just throw an
 exception in the target thread.  The current target thread is
 the thread at the head of the list in the MVar passed to
@@ -228,7 +191,7 @@ installSignalHandlers = do
   installHandler sigQUIT (Catch interrupt) Nothing 
   installHandler sigINT  (Catch interrupt) Nothing
   return ()
-#elif __GLASGOW_HASKELL__ >= 603
+#else
   -- GHC 6.3+ has support for console events on Windows
   -- NOTE: running GHCi under a bash shell for some reason requires
   -- you to press Ctrl-Break rather than Ctrl-C to provoke
@@ -240,11 +203,9 @@ installSignalHandlers = do
 
   installHandler (Catch sig_handler)
   return ()
-#else
-  return () -- nothing
 #endif
 
 {-# NOINLINE interruptTargetThread #-}
 interruptTargetThread :: MVar [ThreadId]
-interruptTargetThread = unsafePerformIO newEmptyMVar
+interruptTargetThread = unsafePerformIO (newMVar [])
 \end{code}